Hello, My welder was working fine but have not used it for a couple of years. Now the wire feed motor is moving very, very slow. It speeds up a little when I turn up the wire speed knob. I put 12v onto the motor and it works fine. I took the gearing apart and all is fine. There is current to the welding wire and the gas is working fine. Relays click when you pull the trigger so it appears everything is in order apart from the motor speed, and when I say it is slow, boy is it slow! You can barely see it move. I'm assuming I need a new PCB? Any help would be appreciated! Cheers! Tony.